If you go against the unit owner's policy they'll probably depreciate the claim, however your deductible won't apply. 

I have a list of real estate related as well as personal related tax questions around 1031, income tax, gift taxes, capital gains, deductions, personal investments and more. 

I have a list of real estate related as well as personal related tax questions around 1031, income tax, gift taxes, capital gains, deductions, personal investments and more. 

We informed the tenant of the above information and that we would be deducting the cost of the replacement from the security deposit at the conclusion of their lease.

A lot of people skip this but it's a huge advantage if you can work through itEvery Landlord's Tax Deduction Guide- is a really good book on taxes and setting yourself up for success as a landlord

I would call a few locals and go in and sit down and show them your current pay stubs (I am assuming you are now a W2 employee with deductions taken from your checks).

Cost Segregation fees range depending on complexity however they can provide a significant return on investment if you can you the additional tax deductions a study can generate 

Does the principle and interest deduction get split between my primary and  rental property? 

This gives you the interest and principle paid (seller's reportable annual capital gains and interest earned for their taxes and interest deductible to you if you itemize).

Sounds like your life is rather busy so time would be of greater value and importance than a few tax deductible expenses...